A plan, scheme, or stratagem: a plotted strategy often used to deceive, trap, or outwit someone.
敵の計略にはまって敗北した。
We fell into the enemy's scheme and were defeated.
彼は権力を得るために巧妙な計略を巡らせた。
He devised a clever scheme to gain power.
その計略は長年にわたって練られてきたものだ。
That stratagem had been developed over many years.